Machine for making corrugated-metal fasteners.



W. C. FORK.

. APPLICATION FILED NOV. 23. 1915 1,268,831. m Patent-ed June 11. 1918.

3 SHEETSSHEET I.

W. C. FORK.

MACHINE FOR MAKING CORRUGATED METAL FASTENERS.

. APPLICATION FILED NOV. 23. I915- Pateniaed J une 11. 1918.

3 SHEETS-SHEET 2.

mm simo w. c. FORK. MACHINE FOR MAKING CORRUGATED METAL FASTENERS.

APPLICATION man NOV. 23. 1915.

' Patented June 11. 1918.

3 SHEETS-SHEET 3.

WILLIAM C. IEORK,] or onfcnoo, InLINoIs, AssrGNon tronoME STEEL GOODS COMPANY,

OFGHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

, yinonrmn non AKING CORRUGATED-METAL rnsrmvnns.

To all whom it may. concern:

Be it known thatI,WILmAM Form,

citizen of the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements in Machines for: Making Corrugated-Metal Fasteners, of which the following is a specification. I I 1 i The present inventionisan improvement upon the machine of the Englert Patent No. 1,208,527 issued December 12,1916. The ob- *ject is to obtain improved effects in the useof rotary disk-form cutters for slicing ofl' portions ofthe corrugations of. a continuously advancing strip of corrugated metal. Various methods'have heretofore been devised fo'r' producing the so-called saw.

tooth formation which is so highly desir-v able in thewell-known metalfastener sometimes/termed a corrugated nail, now so extensively employed in securing together pieces of wood. ylhe Englert invention has the advantage over prior methods of providing for the continuous advance of the corrugated-strip and consequently increased speed of production which is of vory considerable importance in; view of the fact that the article must necessarily be marketed at a low price. I purpose still further improving along. this line by applying gearing to the rotary disk 'cutter or cutters so that they may be positively "driven at a peripheral speed at least equal to that of the rotary feeding means. Thusthe cutterwill be able to keep pace with "the rapidly advancing strip while at the same time doin the cutting under direot power beside ai ing more or less in the feeding of thestrip.

"fIn the accompanylng drawing forming a part of this specification Ihave shown a preferred formof myinvention and described the same in detailfin the following specifi- Specificationbf Letters Patent. Pat t June 11, 191 Application filed November as, 1915. Serial No. 63,027.

In the drawings the same reference characterlis applied .to each part wherever it ocoursin theseveral figures.

The form'of the ZED-3.111601" support is immaterial, it being only essential that it serve as a firm and rigidmounting for thecutter disks, the-corrugating. and feeding rolls for thestripi and thedriving mechanism thereof. The disks 5, 6 are mounted upon the opposite ends respectivelywof shafts 7, 8, shown in dotted linesin Fig. 3 by slipping them over reduced portions 9 thereof, and .applying washers 10 and nuts. llon the reduced ends of said shafts beyond the disks. The shafts are mounted in divided inclined housings l2v which are rigidly mountedupon the stand or support in any suitable manner, as shown for example, by means ofuthe bracketsl3. The inclined disks slightly overlap, as best seen in Fig, 3. Each of the shafts 8, 7 carries a worm wheel 14, 15 which is secured thereto and engages a worm 16, 17 on shafts 18, extending longitudinally of the machine, see dotted lines Fig. 2, and mounted in suit able housings 19, on .the frame or support. The gear24 on the shaft carrying the worm 16 meshes with pinion 23 on shaft 23 provided withia driving pulley-2l by which the machine may be driven from a suitable belt 22.- A cross'shaft 28 receives motion. from said: shaft 18 throughthe bevel pinion 27 thereof and a similarpinion 29 upon the cross shaft and drives the other worm shaft though beveled pinions 30, 31, thereby transmitting motion to the shaft carrying disk 5. The gearing is preferably such that the disks 5 and 6 are driven at the same rate of speed. :The steel ribbon or strip from whichthe corrugatedjfasteners are to be formed may, if desired, be corrugated before being fed to the chamfering machine but preferably the latter is provided with a pair of corrugating rolls 32, 33 of which the latter is driven from the former which receives its motion from a worm wheel 41 on the shaft thereof and a worm 42 upon. the cross shaft 28 above described. I The rolls 32, 33, are mounted ina suitablehousing 43 which is bolted to the bed plate at the entering end of the machine. At the exit end the machine is provided with a pair of feed rolls 36, 36

which are corrugated to correspond to the rolls 32, 33' and receive the strip from the second cutting disk. One of the rolls 36 is driven from the other, which in turn is 

